I had unprotected sex and he pulled out cum on my stomach then put it back can without wiping what are my chances of being pregnant? it was day 7 of ovulation?

An erect penis is secreting sperm continuously during sex, not just at climax. It only takes one getting through to get pregnant. There is no valid way to calculate risk in this exposure. Sexual activity on any day of a woman's cycle can result in pregnancy. If this episode did not get you pregnant, similar sex practices likely will at some point. If it matters get on the pill or use condoms

If this happened less than 72 hours ago, take plan B emergency contraceptive to prevent pregnancy. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex : https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine